208886769064 has 32 divisors (see below), whose sum is σ = 392710032000. Its totient is φ = 104164445952.

The previous prime is 208886769031. The next prime is 208886769079. The reversal of 208886769064 is 460967688802.

It is a junction number, because it is equal to n+sod(n) for n = 208886768987 and 208886769005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4907827 + ... + 4950205.

It is an arithmetic number, because the mean of its divisors is an integer number (12272188500).

Almost surely, 2^208886769064 is an apocalyptic number.

It is an amenable number.

208886769064 is a deficient number, since it is larger than the sum of its proper divisors (183823262936).

208886769064 is a wasteful number, since it uses less digits than its factorization.

208886769064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44017 (or 44013 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 64.

The spelling of 208886769064 in words is "two hundred eight billion, eight hundred eighty-six million, seven hundred sixty-nine thousand, sixty-four".